<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<script language="javascript">
    /* This function is invoked by the activity */
    function wave() {
        alert("Android调用Js啦");
    }
</script>
<body>
    <!-- Js调用Android代码 -->
    <a onClick="window.demo.onCallback()">点我!</a>
</body>

</html>